EP1584877A1 - Tapis pliable pour compartiment de congélation - Google Patents

Tapis pliable pour compartiment de congélation Download PDF

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Publication number
EP1584877A1
EP1584877A1 EP04394054A EP04394054A EP1584877A1 EP 1584877 A1 EP1584877 A1 EP 1584877A1 EP 04394054 A EP04394054 A EP 04394054A EP 04394054 A EP04394054 A EP 04394054A EP 1584877 A1 EP1584877 A1 EP 1584877A1
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EP
European Patent Office
Prior art keywords
mat
cover
ice
sections
surface area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04394054A
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German (de)
English (en)
Inventor
John L. Cartier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1584877A1 publication Critical patent/EP1584877A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L23/00—Cleaning footwear
    • A47L23/22—Devices or implements resting on the floor for removing mud, dirt, or dust from footwear
    • A47L23/26—Mats or gratings combined with brushes ; Mats
    • A47L23/266—Mats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
    • E01C11/245—Methods or arrangements for preventing slipperiness or protecting against influences of the weather for preventing ice formation or for loosening ice, e.g. special additives to the paving material, resilient coatings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/104—Treads
    • E04F11/16—Surfaces thereof; Protecting means for edges or corners thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24496—Foamed or cellular component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet

Definitions

  • the present invention relates generally to the prevention of ice formation on surfaces, and more particularly to a reusable, folding mat for use, for example, with non-self-defrosting freezers.
  • the accumulation of ice on a surface of a non-self-defrosting freezer can reduce the storage capacity of the freezer and can be an annoyance in terms of foul odours and the effort required to defrost the freezer.
  • the accumulation of ice on other surfaces such as, for example, outdoor stairs can present a safety hazard of slippery footing. Thus, a need exists to reduce or eliminate the accumulation of ice on such surfaces.
  • step pads and mats have been developed for use in outdoor settings. While these devices are generally suitable for their particular purpose, as they are described they are not suitable for additional use in a freezer compartment.
  • U.S. Patent No. 4,000,947 to Naka, et al. is directed to a flexible non-skid strip comprised of a main body extending along the length of the strip and adapted to be secured to the tread portion of a stair.
  • U.S. Patent No. 5,357,724 to Munekatsu Sonoda is directed to a stair tread in which synthetic rubber is used to encase metal side core portions arranged at the side edges of a substantially horizontal core section at a downward right-angle thereto.
  • U.S. Patent No. 5,898,814 to Yamamoto, et al. is directed to a stair covering including an adjustable thickness anti-skid member and illumination of the stairs.
  • 6,088,976 to Gillis Roy is directed to a removable, non-skid pad that covers a portion of a step of an exterior staircase so as to allow people to use it more safely. Any snow or ice accumulations are dislodged by removal of the pad from the step and skating it.
  • a mat as specified in claim 1 is also directed to a method by which the described apparatus operates and including method steps for carrying out every function of the apparatus.
  • a mat that includes at least one inner, insulating core composed of a material that is flexible at cold temperatures and a sufficient thickness to allow compression, and an outer cover that is both slip resistant and water proof.
  • the outer cover of the present invention does not allow ice to adhere to it, and any ice that forms upon it is easily removed.
  • Such a mat provides a simple and convenient way to prevent ice accumulation on surfaces of freezers, and to reduce the hazard of ice accumulation on exterior stairs.
  • the present invention provides a foldable mat including at least two cores of relatively uniform thickness that remain flexible at temperatures below the temperature at which water freezes (0° Celsius at sea level), and a flexible, water-proof cover including at least two mat sections.
  • Each of the mat sections includes at least one flexible core about which has been formed an air-tight seal, and each of the mat sections is foldable onto another of the mat sections. Forming the mat in rectangular sections facilitates such folding, but such geometry is not required.
  • the flexible core may be secured to the cover within the air-tight volumes by an adhesive.
  • the flexible cores are each composed of foam material that occupies most of the inner volume of the corresponding mat section. Variations on this design, however, are possible. For example, any material that remains flexible at low temperatures may be employed, such as certain gases (e.g., air) or fluids. The materials employed in the mat that have the potential of contacting food should be generally recognised as safe for such contact.
  • any ice formed on the outer cover of the mat is breakable and easily removable by deforming the flexible mat.
  • ice accumulated on the mat will, by virtue of the body weight of a person stepping on the mat, compress the flexible core and deform the mat such that the ice will break. Flexing the mat after ice has accumulated upon it will break the ice, and the broken ice may then be easily swept or pushed off the mat. The ice may be simply removed by pushing it from the mat with the person's foot, or brushing it from the mat, as the cover has non-adhering characteristics.
  • the outer cover preferably has slip-resistant features or characteristics, as well as properties that allow it to be easily cleaned.
  • the outer surface of the cover may be textured to prevent slippage.
  • the mat preferably includes attachment means (described below) to secure the mat to the desired surface (e.g., a freezer floor or an outdoor step).
  • the mat sections and cores are dimensioned to provide maximum coverage of the desired surface, with the cover including seals at appropriate positions so as to envelope the cores and provide flexible folds by which adjacent mat sections may be folded upon one another.
  • the mat may have sealed border providing some adaptability to the surface dimensions of the surface upon which the mat is to be deployed.
  • each section of the mat may include more than one flexible core, and in yet other embodiments each section of the mat may be oriented with respect to other mat sections so as to enable adjacent, non-planar surfaces of for example, a freezer, to be covered.
  • the mat 2 comprises an integral, single-piece apparatus having at least two (preferably rectangular) adjacent mat sections 4. Between each of the adjacent sections is a thin sealed edge 5 of sufficient width (i.e., spacing between mat sections) and flexibility to allow each adjacent section to fold over on top of its neighboring section.
  • An optional rolled front-edge 13 makes the mat easier to grip during deployment and retrieval from the surface to which the mat 4 is applied.
  • Figure 1 also illustrates a preferred option of having a relatively flat, sealed border 9 extending along three sides of the perimeter of the mat 2. This allows some flexibility in positioning the mat on the desired surface, allowing a portion of the border to fold up on a vertical surface, and providing a region for securing the mat to the desired surface.
  • the mat may be secured with fasteners (e.g. , staples, tacks, nails, etc.) that pierce the border 9 region and extend into the desired step or landing.
  • fasteners e.g. , staples, tacks, nails, etc.
  • the foldability of the mat and its flexible border region allow the mat to be more easily packaged, shipped and stored.
  • a single-fold embodiment i.e., having two mat sections
  • a length of 36" (914.4mm) can be reduced to 18" (457.2mm) for shipping and handling by folding the mat at a centrally-disposed seal/fold extending along the width of the mat.
  • the freezer mat embodiments typically have a blue coloring, but obviously any desirable color may be selected.
  • darker colors such as, for example, black are preferable for their spectral absorption properties that can assist in melting ice.
  • Figure 2 presents a cross-sectional front view (not drawn to scale) of the mat 2 positioned adjacent a surface 6 upon which it is desired that no ice forms such as, for example, a freezer surface.
  • each mat section 4 is at least one core 8 having a relatively uniform thickness.
  • Each core 8 is composed of an insulating substance that remains flexible at temperatures below ice-formation temperatures (0° C at sea level, but varies with elevation.)
  • One such material is STYROFOAMTM, but equivalents thereof and/or other substances such as low-freezing point gases and fluids may also be employed.
  • An air-tight, water-proof seal is formed around each core 8 by cover 10. In a freezer compartment, ice is prevented from forming on the mat.
  • ice 12 may form on an outer surface 14 of the mat 2 (rather than the surface 6), but because the cover 10 is composed of a flexible material to which the ice cannot adhere, the ice 12 can be easily broken by applying a compressive force to the section 4 having the flexible core contained therein, and then the broken ice can be swept or pushed off the surface 14 of the mat 2.
  • the cover preferably has few or no holes that might allow water to become positioned between the mat and the protected surface and turn to ice.
  • the cover material is preferably comprised of an imitation leather such as knit cloth that is coated with polyvinyl chloride (PVC) after pressing and forming.
  • PVC polyvinyl chloride
  • Such a cover resists low temperatures and premature aging, and is quite durable.
  • PVC imitation leather has been standardized in national standard GB/T8948-94 (Great Britain), due to its exemplary waterproofing properties and its ability to allow optional texturing to create non-slip surfaces.
  • Other flexible materials such as pure PVC, polyvinyl resins, or polyurethane or synthetic elastomers and their equivalents may alternatively be employed.
  • Figure 3 illustrates how adjacent mat sections 4'-4''' are foldable upon one another due to sufficient spacing between the core-containing mat sections 4, as determined by the width of the sealed edges 5.
  • a sealed edge 5 having a width of several cm or more is adequate to allow folding.
  • Figure 4 illustrates another embodiment of the ice-eliminating mat 2 for use with an external step 20 that enables coverage of multiple non-planar surfaces.
  • the mat 2 is placed on an outdoor step in late Autumn before ice and snow become a threat to safety.
  • the mat may be secured by means such as fasteners (staples, nails, screws), two sided tape, velcro, or any other conventional mounting technique. If the application is on brick or concrete stairs, a silicone sealer or a like material can be used to secure the mat for the duration of the winter.
  • the mat is positioned approximately 1/2" (12.7mm) from the front edge 11 of the step 20 with the rounded edge 5 to the front, then placing staples 7 as needed through sealed regions of the mat 2, taking precaution not to pierce the cores 8.
  • the two adjacent mat sections 4', 4" enable coverage of more than a single, planar surface.
  • This same concept can be extended to the non-defrosting freezer use, wherein more than one surface of the freezer can be protected from ice formation by the mat 2.
  • the ice-eliminating mat may be used to cover one surface, with or without securing means, of a freezer if that is desired.
  • a single section 4', or multiple sections in combination may provide sufficient surface area to cover the bottom rack of a freezer.
  • Figure 5 illustrates yet another alternative embodiment of the mat 2, wherein more than one core 8 is enveloped within each mat section 4. Varying numbers of cores are depicted in the illustration merely for the purpose of demonstrating alternatives and the number of cores in each mat section is not necessarily different. Such embodiments may be useful in creating a contour or texture to the outer surface of the mat, enhancing the mat's anti-slippage characteristics.
  • the ice-eliminating mat 2 is formed using conventional sealing and molding techniques, including by controlled application of heat and/or ultrasound energy to the regions of the cover 10 where sealing is required, such as along the edges 5, border 9, and rolled front edge 13.
  • an 18"x36" (457.2mm x 914.4mm) piece of PVC was used to form a cover 10 having an approximate 1" border 9 around three sides of the mat 2.
  • a piece of 1/4" (6.35mm) thick foam having approximate length and width dimensions of 8"x34" (203.2mm x 863.6mm) was cut into four rectangular cores and positioned spaced-apart on the PVC cover 10.
  • a pressure-sensitive adhesive (optional) was applied to affix the cores 8 to the PVC cover at desired locations, and then the cover was folded over the tops of the cores and sealed around the perimeters of the cores and along the border of the mat.
  • the foldable, ice-eliminating mat will retain it's flexibility and perform as intended.
  • the mat may be formed with hollow cores via conventional injection and/or blow molding, followed by material injection into the cores and re-sealing.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Table Equipment (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
EP04394054A 2004-04-07 2004-08-25 Tapis pliable pour compartiment de congélation Withdrawn EP1584877A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US819528 2004-04-07
US10/819,528 US20040191483A1 (en) 2000-01-31 2004-04-07 Foldable freezer compartment mat

Publications (1)

Publication Number Publication Date
EP1584877A1 true EP1584877A1 (fr) 2005-10-12

Family

ID=34912703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04394054A Withdrawn EP1584877A1 (fr) 2004-04-07 2004-08-25 Tapis pliable pour compartiment de congélation

Country Status (2)

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US (1) US20040191483A1 (fr)
EP (1) EP1584877A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD636991S1 (en) * 2006-10-19 2011-05-03 Ic! Berlin Brillen Gmbh Spectacle case
GB2449690A (en) * 2007-05-31 2008-12-03 Primeur Ltd Foldable floor covering
US20090297736A1 (en) * 2008-05-29 2009-12-03 James Keighley Foldable door mat
US20130081608A1 (en) * 2011-09-30 2013-04-04 Mary Ida Bonadio Stove top shield
US20150068511A1 (en) * 2013-05-06 2015-03-12 John Pawley Alternative Stove Top Counter Top
USD948244S1 (en) * 2019-07-09 2022-04-12 Ggumbi Co., Ltd. Playmat for a baby
USD984170S1 (en) * 2019-07-09 2023-04-25 Ggumbi Co., Ltd. Playmat for baby
USD948243S1 (en) * 2019-07-09 2022-04-12 Ggumbi Co., Ltd. Playmat for a baby
USD984171S1 (en) * 2019-07-09 2023-04-25 Ggumbi Co., Ltd. Playmat for baby
US20230181964A1 (en) * 2021-12-13 2023-06-15 Good Sport LLC Folding exercise mat

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165341A (en) * 1984-08-29 1986-04-09 Christopher Denham Wall Refrigerators
US4603558A (en) * 1983-03-31 1986-08-05 Mcadams Michael James Receptacle for mounting in a freezer for assisting in the defrosting thereof
JP2000024167A (ja) * 1998-07-13 2000-01-25 Asahi Chem Ind Co Ltd 凍結防止用養生マット
US20020106499A1 (en) * 2000-01-31 2002-08-08 Cartier John L. Ice breaker mat

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Publication number Priority date Publication date Assignee Title
US3863387A (en) * 1971-03-10 1975-02-04 Joseph Webster Ground protection covers
GB1529684A (en) * 1974-12-19 1978-10-25 Taymar Ltd Adaptors
US4390585A (en) * 1982-05-05 1983-06-28 Bond Cote Of Virginia, Inc. Durable flexible membrane and method of making same
US4403009A (en) * 1982-11-24 1983-09-06 Becton Dickinson And Company Skid resistant resilient floor covering
US5100716A (en) * 1989-12-20 1992-03-31 Gestion Naurin Inc. Outdoor floor covering
US5380988A (en) * 1992-04-29 1995-01-10 Dyer; C. William Heated mat structure for melting ice and snow
JPH0734095Y2 (ja) * 1992-12-21 1995-08-02 株式会社園田製作所 階段の段板
US5679432A (en) * 1994-05-09 1997-10-21 Benchmark Foam, Inc. Multi-layer laminate structure
US5522176A (en) * 1995-02-17 1996-06-04 Suttle; Gene C. Landscaping ground cover
US6321401B1 (en) * 2000-01-07 2001-11-27 T. L. Clark, Inc. Infection control mat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603558A (en) * 1983-03-31 1986-08-05 Mcadams Michael James Receptacle for mounting in a freezer for assisting in the defrosting thereof
GB2165341A (en) * 1984-08-29 1986-04-09 Christopher Denham Wall Refrigerators
JP2000024167A (ja) * 1998-07-13 2000-01-25 Asahi Chem Ind Co Ltd 凍結防止用養生マット
US20020106499A1 (en) * 2000-01-31 2002-08-08 Cartier John L. Ice breaker mat

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 04 31 August 2000 (2000-08-31) *

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